Terrestrial water storage changes in the Amazon basin measured by GRACE during 2002-2010

被引：26
|
作者：
Feng Wei [1 ,2 ,3 ]
Lemoine, Jean-Michel [3 ]
Zhong Min [1 ,4 ]
Hsu Tou-Tse [1 ,4 ]
机构：
[1] Chinese Acad Sci, Inst Geodesy & Geophys, State Key Lab Geodesy & Earths Dynam, Wuhan 430077, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] CNES GRGS, F-31401 Toulouse, France
[4] Huazhong Univ Sci & Technol, Inst Geophys, Wuhan 430074, Peoples R China
来源：
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION | 2012年 / 55卷 / 03期
关键词：
GRACE; Amazon basin; Terrestrial water storage; GRAVITY; VARIABILITY; SYSTEM;
D O I：
10.6038/j.issn.0001-5733.2012.03.011
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
We estimate the terrestrial water storage (TWS) changes in the Amazon basin using GRACE, and compare the results with that of hydrological models and precipitation data. On inter-annual timescales, GRACE results show obvious drought events in 2002-2003 and 2005. From 2007 to 2009, TWS shows a significant increase, and reaches the maximum (772 +/- 181 km(3)) in June 2009. From June 2009 to December 2010, TWS reduces 11.39 +/- 262 km(3),which is equivalent to 3. 2 +/- 0. 7 mm global sea level rise. Results from hydrological models also show an obvious TWS decrease in 2010, which are consistent with GRACE's results. In drought seasons of 2005 and 2010, the precipitation in the Amazon basin decreases significantly, which indicates that the precipitation is a key factor of TWS changes. In addition, the scaling factor method we used in this study reduces GRACE post-process errors in the Amazon basin significantly.
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页码：814 / 821
页数：8
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